diff --git a/.changeset/heavy-owls-float.md b/.changeset/heavy-owls-float.md
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+---
+'@backstage/techdocs-common': patch
+'@backstage/plugin-techdocs': patch
+---
+
+Google Cloud authentication in TechDocs has been improved. https://github.com/backstage/backstage/pull/3981
+
+`techdocs.publisher.googleGcs.credentials` is now optional. If it is missing, `GOOGLE_APPLICATION_CREDENTIALS`
+environment variable (and some other methods) will be used to authenticate.
+Read more here https://cloud.google.com/docs/authentication/production